LM4040CIM3-4.1+ Texas Instruments Integrated Circuit (SOT23 (3-Pin)) In Stock
LM4040CIM3-4.1+ is a precision shunt voltage reference from Texas Instruments with a 4.1 V output, 0.1% initial accuracy, and SOT-23 3-pin packaging. Ideal for low-power analog circuits and ADC biasing. From $0.50 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- LM4040CIM3-4.1+ Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM4040CIM3-4.1+?
- 4.1 V precision shunt reference with 0.1% initial accuracy for reliable analog circuit biasing
- Ultra-compact SOT-23 3-pin package enabling space-efficient PCB layouts in portable designs
- Low operating current from 60 µA supporting battery-powered and energy-sensitive applications
- Wide operating temperature range of -40°C to +125°C for industrial and automotive environments
What is LM4040CIM3-4.1+ used for?
The LM4040CIM3-4.1+ is widely used as a reference voltage source for ADC and DAC biasing in precision measurement instruments and data acquisition systems. It suits portable medical devices and handheld test equipment where accurate 4.1 V references are needed with minimal board area. Its shunt topology and stable output also make it appropriate for power supply monitoring and battery management circuits.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the LM4040CIM3-4.1+ datasheet?
LM4040CIM3-4.1+ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM4040CIM3-4.1+?
Compatible alternatives and drop-in replacements for LM4040CIM3-4.1+:
Frequently Asked Questions
What output voltage does the LM4040CIM3-4.1+ provide, and how accurate is it at room temperature?
The LM4040CIM3-4.1+ provides a fixed 4.1 V shunt reference output with 0.1% initial accuracy at 25°C, meaning output deviation is within ±4.1 mV under normal conditions. This precision level suits 12-bit and 14-bit ADC reference applications where stable and repeatable voltages are critical.
For a portable sensor module running from a 5 V supply, how little current does the LM4040CIM3-4.1+ draw in steady-state operation?
The LM4040CIM3-4.1+ operates with a minimum cathode current of 60 µA, making it highly efficient for battery-powered sensor nodes. Even at maximum load, its shunt configuration keeps total bias current manageable, extending battery life in portable designs running from 5 V rails.
Over what temperature range can the LM4040CIM3-4.1+ maintain its voltage reference performance reliably?
The LM4040CIM3-4.1+ is rated for operation from -40°C to +125°C, covering both industrial and automotive temperature ranges. Output accuracy is maintained within specified limits across this range, with a temperature coefficient typically below 100 ppm/°C ensuring stable references in harsh environments.
When would a designer choose the LM4040CIM3-4.1+ over a series-type voltage reference in a precision measurement circuit?
A shunt reference like the LM4040CIM3-4.1+ is preferred when the supply voltage varies or exceeds 5 V, because the shunt topology absorbs excess current without requiring a regulated input. Its 4.1 V output and 0.1% accuracy make it practical for 12-bit ADC reference scaling in circuits where series regulators would add noise or complexity.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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